METHOD FOR ESTIMATING THE PRESS FORMABILITY OF GALVANNEALED STEEL SHEETS BY X-RAY DIFFRACTION

METHOD FOR ESTIMATING THE PRESS FORMABILITY OF GALVANNEALED STEEL SHEETS BY X-RAY DIFFRACTION

A method for estimating the press formability of galvannealed steel sheets provided, wherein: the values found by: , and wherein I(~) = the total X-ray diffraction intensity of the ~ phase, I(~) = the total X-ray diffraction intensity of the ~ phase, IB(~)= the background X-ray diffraction intensity...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KITTAKA, TOSHIHARU, HIROSE, YUSUKE, SAITO, MINORU, NAGATANI, TAKESHI, CHOHATA, KAZUAKI
Format: Patent
Sprache:eng ; fre
Schlagworte:
CHEMICAL SURFACE TREATMENT
CHEMISTRY
COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
COATING MATERIAL WITH METALLIC MATERIAL
COATING METALLIC MATERIAL
DIFFUSION TREATMENT OF METALLIC MATERIAL
INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
METALLURGY
PHYSICS
SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
TESTING
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Zusammenfassung:A method for estimating the press formability of galvannealed steel sheets provided, wherein: the values found by: , and wherein I(~) = the total X-ray diffraction intensity of the ~ phase, I(~) = the total X-ray diffraction intensity of the ~ phase, IB(~)= the background X-ray diffraction intensity of the ~ phase, IB(~)= the true X-ray diffraction intensity of the ~ phase, I(~) - IB(~) = the true X-ray diffraction intensity of the ~ phase, ~ = the ~ phase of an Fe-Zn intermetallic compound in coating of galvannealed steel sheet, and ~ = the ~ phase of the intermetallic compound, are used as an index to determine the press formability.